10x - 8y =4
-5x + 3y = -9
Please solve with elimination i really need the help!!
please show work
Answer:
x = 6
y = 7
Step-by-step explanation:
Here, (10x - 8y = 4) and (- 5x + 3y = - 9) are two given equation
Now, Name the equation
10x - 8y = 4
take 2 as common we get
2(5x - 4y = 2)
5x - 4y = 2 ...(1)
- 5x + 3y = - 9 ...(2)
Now, Subtract (1) from (2)
5x - 4y = 2
- 5x + 3y = - 9
————————
- y = - 7
y = 7
Now, Put the value of y in equation (1) we get
5x - 4y = 2
5x - 4(7) = 2
5x - 28 = 2
5x = 28 + 2
5x = 30
x = 30÷5
x = 6
Thus, The value of x is 6 and y is 7
FOR VERIFICATION ONLY:
5x - 4y = 2
5(6) - 4(7) = 2
30 - 28 = 2
2 = 2
- 5x + 3y = - 9
- 5(6) + 3(7) = - 9
- 30 + 21 = - 9
- 9 = - 9
Hence, L.H.S = R.H.S
-TheUnknownScientist
HELP I NEED THE ANSWER BY TODAY!!!!!!
1.Most snakes live where the temperature ranges from 75° to 90°, inclusive. Write a compound inequality to
represent temperatures where the snakes will NOT live.
2.Atlantic sea turtles that incubate below 23° or above 33° rarely hatch. Write a compound inequality to
represent the temperatures at which the eggs SHOULD be incubated.
3.A certain road has a speed limit of 65 mph and a minimum speed of 40 mph. Write a compound inequality that
represents the speed you should drive to avoid getting a ticket.
Answer:
What is his answer I'm just go with 90 c 75 equals +109 carry the nine and throw away the 100 and 9 plus 1000003333333368888886666666777777266666666222222266666 = 2222222222299999999996666666666822222222222666666666666633333333333333399999333333333333333888888888888 I'm in 5 e grade by the way (:
Step-by-step explanation:
so don't blame me if I'm
Two Tickets to an ice skating performance costs $36. For five tickets it costs $90, and for 9 tickets it costs $162.
The proportional relationship that gives the cost of x tickets is:
[tex]y = 18x[/tex]
What is a proportional relationship?A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:[tex]y = kx[/tex]
In which k is the constant of proportionality.Two tickets to an ice skating performance costs $36, hence, when [tex]x = 2, y = 36[/tex], then:
[tex]y = kx[/tex]
[tex]36 = 2k[/tex]
[tex]k = \frac{36}{2}[/tex]
[tex]k = 18[/tex]
Hence, the relationship is described by:
[tex]y = 18x[/tex]
You can learn more about proportional relationships at https://brainly.com/question/13550871
In the winter, a town has a low of -5⁰F. In the summer, the same town has a high of 98⁰F. what is the difference between the temperature?
Question 16 (1 point) (04.05 MC) The graph shows a journey in a car. Which of the statements most likely describes the start of the journey at the portion of the graph labeled I? (1 point) M M Distance (mi) N к Time (hr) a Ob The car travels the same distance per unit of time because the portion shows a linear, increasing function The car travels different distances per unit of time because the portion shows a linear, increasing function. The car travels the same distance per unit of time because the portion shows a nonlinear, increasing function Od The car travels different distances per unit of time because the portion shows a nonlinear, increasing function.
Answer:
honestly i think it might be (C)
Step-by-step explanation:
please help me, when saying the answer please say why it is and show your work
Answer:
Step-by-step explanation:
write an equation in standard form that has an x-intercept of (2,0) and a y-intercept of (0,-4)
Answer:
Input work is the work done on a machine as the input force acts through the input distance. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance.Jan 15, 2020shd dhdbxhd shx xhd dhddhdxbxbd hx shs shs xhd dhd zud hx dhd ddbd
fdnhd dbsbs shsbdhd rurbf
dvdgdhmr.d
hdrbe
fbsv dbxusged
xbshr
fbdvd
What is the indicated limit?
The limit doesn't exist
A zookepper predicted that the weight of a newborn lion would be 2.8 pounds. When the zoo's lion gave birth, the newborn weighted 3.5 pounds. What is the zookeeper's percent error?
Answer:
0.7
Step-by-step explanation:
i did it with math
Answer:
25%
Step-by-step explanation:
divided 3.5 by 2.8 = 1.25
the point 25 is your percent error
What does the equation 7(3x - 4) equal?
Answer:
21x-28
Step-by-step explanation:
7 times 3x is 21x
7 times -4 is -28
hence 21x-28
i’ve looked everywhere for the answer, so please help a pimp out
Answer:
b
Step-by-step explanation:
Write three ratios equivalent to each ratio. Use tables to show your work. a) 3:4 b) 14:4
Answer:
3/4 is equal to 9/12 and 14/4 is equal to 56/12
Step-by-step explanation:
multiply both sides by 3
Answer:
a) 6:8, 9:12, 12:16
b) 28:8, 42:12, 56:16
Step-by-step explanation:
1
abc14
determine whether each expression is a monomial
Answer:
15
Step-by-step explanation:
abcdefghijknobeughriuwekhjtwu4igrjsnbei
Kenny has a jar full of nickels and dimes. If he counted the money in his jar, how much does he have ?
Answer:
Step-by-step explanation:
it c
Answer:
C.
Step-by-step explanation:
find m<1 and m<2
help
Answer:
m‹1 = 125°
m‹2 = 55°
Step-by-step explanation:
Corresponding angles, a linear pair, and a vertical angle.
This applies because there is a transversal (because it forms angles between the two lines) which cuts between two parallel lines (indicated by the red mark).
Mr. Wilson has 30 students in his class. This is 12 more
students than Mr. Star has
How many students does Mr Star have
O A. ++30= 12
x=42 students
O B. **12=30
x= 72 students
O C. X+12=30
x=42 students
O D. x+12=30
x=18 students
Answer:
students of mr.wilson :30
students of Mr.star : 12 less than Mr.wilson
then, 30-12=18
Sora paid $26.46 for 8.4 gallons of gasoline how much was each gasoline?
What is the value of the expression when a = 6, b = 4, and c = 8? 2a/3b−c
A: 1
B: 3
C: 8
D: 12
Answer:
3
Step-by-step explanation:
[tex]\frac{2a}{3b-c} \\=\frac{2(6)}{3(4) - 8} \\=\frac{12}{12-8} \\=\frac{12}{4} \\=3[/tex]
I hope I was of assistance! #SpreadTheLove <3
Can someone answer 7-11 for me by 12:00AM
Answer:
Step-by-step explanation:
7). x + y = 4 ⇒ y = 4 - x -----> xy = - 96
x(4 - x) = - 96 ⇔ x² - 4x - 96 = 0
D = ( - 4)² - 4(1)(- 96) = 400 = (20)²
[tex]x_{1}[/tex] = (- ( - 4) - 20) ÷ 2(1) = - 8
[tex]x_{2}[/tex] = ( - ( - 4) + 20) ÷ 2 = 12
Numbers are - 8 and 12
8). It's your turn now. You can do it
9). x² - 5x + 3 = 0
0 < [tex]x_{1}[/tex] < 1
4 < [tex]x_{2}[/tex] < 5
10). - x² + 3x + 1 = 0
-1 < [tex]x_{1}[/tex] < 0
3 < [tex]x_{2}[/tex] < 4
11). x² + 2x - 2 = 0
- 3 < [tex]x_{1}[/tex] < - 2
0 < [tex]x_{2}[/tex] < 1
is 18/30 and 3/5 equivalant
Answer: Yes 18/30 is equivalent to 3/5 heres the picture
A construction company ordered 65 wood beams for a new project. Each beam was 27.3 ft long. What was the total length of all the beams put together? Write your answer in yards
Answer:
591.5 yards because 27.3 multiplied by 65= 1774.5. there are 3 feet in a yard so 1774.5/3= 591.5 yds
ron scored 20 out of 25 in english, 30 out of 40 in Science, and 43 out of 50 in mathematics. In which subject was his percentage the best? Must be a writing. Hurry PLS!!!!
Answer:
mathematics has highest %
Step-by-step explanation:
english %= (20/25)*100%
=80%
science%=(30/40)*100%
=75%
mathematics %=(43/50)*100%
=86%
Anybody Know This. ?
Answer: 4 feet
Step-by-step explanation:
In order to determine the length of side, we need to use what is called the Pythagorean theorem, which states: a² + b² = c² The a and b in this equation are both of the sides of the triangle that we call legs. (I have attached a picture for reference if you do not know what sides I am referring to). The c in this equation refers to the hypotenuse of the triangle. (Again, please refer to the attached photo).
So now, we need to plug in the information we already know into this equation. The height of the ramp will be our a and the distance from the box will be our b. We can see that the hypotenuse (c) is labeled as 5, so we can fill in that information in our equation.
a²+b²=5² (simplify by squaring the 5)
a²+b²=25
Next, we know that the height of the box is 3 feet, which let's us know that our a is 3. Let's plug this new information in.
3²+b²=25 (simplify by squaring the 3)
9+b²=25 (simplify by substracting the 9 from both sides)
25 - 9 = 16b²=16
Hey! Now our equation looks much simpler! Now, all we need to do it square root both of the sides in order to get b by its self.
b²=16
√b² = b
√16 = 4
Final answer: b = 4
I truly hoped this explanation helped! If you feel you still need a bit of help, David May explains the Pythagorean theorem very well in his video titled, "Find The Hypotenuse Using Pythagorean Theorem | Dave May Teaches" if you would like to check it out. Take care! :)
Which of the following expressions are equivalent to(x + 5)^2?
Check all the apply.
x^2 + 5x + 5x + 25
(x + 5)(x + 5)
x^2 + 25
x^2 + 5x + 10x
x^2 + 10x + 25
Answer:
[tex]x^{2} +5x+5x+25\\x^{2} +10x+25[/tex]
Step-by-step explanation:
[tex](x+5)^{2} =x^{2} +10x+25[/tex]
d=17 f=3 0.9d-2.7f
pls answer
Answer:
= 7.2
Step-by-step explanation:
0.9(17) -2.7(3) =
15.3 - 8.1=
=7.2
round 5035 to the nearest thousand. Enter your answer in the box below.
Answer:
5000
Step-by-step explanation:
A basketball player averages 22.5 points scored per game with a standard deviation of 6.2 points. In one game, the number of points the athlete scored was 1.2 standard deviations below the mean. Which of the following is the z-score for the number of points scored?
–7.4
–1.2
1.2
7.4
Answer: -1.2 because I know
Step-by-step explanation:
Answer:
The person above me is right.
-1.2 is correct
ED2021
(all my homies hate stats, i do too)
Select the correct answer from each drop-down menu.
What is the factored form of this expression?
27t3 – 36t2 – 12+ + 16 =
The factored form of this expression is (9t^2 - 4)(3t - 4)
The polynomial is a function with a degree of 3 and above. Given the polynomial function;
27t^3 – 36t^2 – 12+ + 16 = 0
Group
(27t^3 – 36t^2) – (12t + 16) = 0
Factor out the GCF
9t^2(3t-4)-4(3t-4) = 0
(9t^2 - 4)(3t - 4)
Hence the factored form of this expression is (9t^2 - 4)(3t - 4)
Learn more on factored form here: https://brainly.com/question/43919
#SPJ1
If m∠ABD =64°, and m∠CBD = 30°, then m∠ABC =?
Answer:
34°
Step-by-step explanation:
angle ABC
= 64°-30°
= 34°
Please help I’m struggling on this one
Answer:
2.2 use the cosine rule then substitute all the information
Answer:
Step-by-step explanation:
Use the law of cosines
a² = 3²+4²-2*3*4 cos 32°
a = √9 +16 -24 cos32°
a =√4.64684
a ≈ 2.2